I feel like I've heard of the Corbon DPXs having a few issues, but those may have been resolved. Speaking generally, the barnes bullets give you the deepest penetration of almost any bullet out there, in any load, because they don't fragment.
But to second what most others have been saying:
Federal 125 Nyclad--old but proven performer, low recoil
158 grain FBI load--old but proven performer, moderate recoil, probably won't get much expansion but you'll get penetration, which for most tactical use is more important
Speer 135 Gold Dot--probably the newest load that is also the most proven of any new "wonderbullet" load. Lots of LEOs using. Good expansion and good penetration. Probably your safest bet, performance wise. Bit more snap than the Nyclads but not very much. Look for these in the 50 pack for LEOs rather than the 20 pack for civilians, you might have to go online to do it, but it's 50% cheaper.
I like to go with stuff that has a track record, rather than the newest wonderbullet that might not penetrate or otherwise might do something odd.
PS I've heard good stuff about the Buffalo Bore as well.
Whatever you do, just don't buy some lightweight superfragmenting wonderbullet that won't give you the penetration you need.
